Conductor support



Aug. 16, 1927.

W. S. MAYER CONDUCTOR SUPPORT Filed April 10, 1924 Zfg'y WaZterJ Patented Aug. 16, 1927.

UNITED STATES WALTER s. MAYER, F PHILADELPHIA, PENNSYLVA IA.

CONDUCTOR surreal.

Application filed April 10, 1924. Serial No. 705,5 74.

Myinvention is designed to provide improved means for connecting trolley- Wires with hangers for supporting the same, and

- my leading objects are to provide a supporting device which is easily installed, automatically locks its threaded parts against loosening by vibration, and which is of such simple constructionth'at it may be produced at low cost.

comprises a sheet metal blank bent to form a head and webs extending transversely thereto and terminating in clamping jaws. The elasticity of the metal normally spreads apart, the wiebsand jaws, and the jaws are drawu'toward'one another, to clamp a conductor between them, by a bolt passing through the webs and having thereon a nut which, when tightened up, is locked against vibratory rotation by the expansion pressure of the webs. Preferably the webs are bowed longitudinally and provided with edge flanges, providing great strength where the pressure of the binding bolt is applied and permitting the jaws to be tightly drawn up on the wire without distortion of the clamp. The expanding tendency of the jaws also effects the automatic disengagement thereof from the wire when the bolt and nut are unscrewed, and moreover facilitates the registration of the wire between the jaws during installation.

The head of myimproved device is preferably dished and provided with a threaded member for engaging a hanger stud. The engagement of the resilient dished head with the hanger base or insulator locks the threaded members against rotation. commonly resulting from vibration.

The characteristic features and advantages of my improvements will more fully appear from the following description and the accompanying drawings in illustration of embodiments thereof.

In the drawings, Fig. 1 is a plan view of a blank from which my improved supporting device is formed; Fig. 2 is an end view of a supporting device embodying my invention with a conducting wire clamped between the jaws thereof; Fig. 3 is a side elevation of the structure shown in Fig. 2; Fig. 4 is a transverse sectional view illustrating the application of my improved supporting device to a hanger; Fig. 5 is a transverse sectional view on the line 55 of In its preferred form. my improved device Fig.2;jFig. 6 is a longitudinalsectional view ota nodified formot' supporting device, and-Fig. 7 isa transverse sectional View on the line 7 -7 of Fig: 6. v I In themanufacture of devices, embodying my-improvements, there is preferably stamped from sheet material a blank, such as illustrated in Fig.1, comprising a rectangular median section 1, from which project triangular extensions 1, and rectangular end sections 2 from which project the curved wings 2. The median section. 1 has punched therein the. studfaperture 3, and the webs 2 have punched thereinthe bolt apertures 4;. I he'blank is curved longitudinally to give the-intermediate portion 1 and the endportions 2 a concavo-convex contourJand the triangular extensions 1' and wings 2 are bent along the lines 5 to form reenforcing flanges. i

As shown in Figs. 2 to 5, inclusive, a square nut 6, containing, a threaded aperture 7, is placed between the flanges 1' and the webs 2 are then bent transverselv to the head 1 so as to engage the edges of the nut 6 and bring the jaws 2 into juxtaposition. The extensions 1' have lips 1" bent therefrom over the bottom surface of the Iiut 6 so as to hold it against the head 1.

The metal around the bolt holes 4 is offset to form recesses 8, and a bolt 9. disposed in the bolt holes 4, has its head 9' disposed in one of the recesses 8 to prevent rotation of the bolt. A nut 10 is screwed on the threaded end of the bolt projecting through the web 2 opposite the bolt head 9'. and is seated in the other recess8. v

An insulating hanger base 1.1 is provide with a threaded stud 12 adapted to pass freely through the aperture 3 in the head 1 and to be engaged by the threaded nut 6. The cross section of the device is preferably of such dimensions as to fit within the jaws of the usual spanner or wrench, and the rotation of the device screws the nut 6 upon the stud 121mm the elastic dished head 1 engages the insulating base 11. The resiliency of the dished head exerts a thrust which looks the threaded members against rotation due to vibration.

A conductor wire 13, provided with the channels 14, may be readily inserted between the jaws 2 and the jaws drawn up to clamp the wire bv means of the nut 10 on the bolt 9, the resiliency of the webs 2 exerting a thrust against these threaded memberspreventing relative rotation thereof due to vibration.

In the form of the invention illustrated in Figs. 6 and 7 the head 1 has a nut integrally formed therewith by drawing the metal thereof to form a tubular member 141 provided with internal threads. The flanges 1 are bent at an angle to the head so as'to engage the tubular shank 14: and provide reenforcement therefor. The threaded tubular shank 14 is adapted to be screwed upon a threaded hanger stud 12 and theengagement of the dished head 1 with the insulating base 11 of a hanger exerts pressure upon the threaded members preventing the rotation thereof by vibration.

Having described my invention, I claim:

1. A supporting device formed of a blank bent to form an end member forming a seat for a stud engaging nut and'bowed members extending transversely to said and member and converging to form terminal clamping jaws, and a bolt passing through said bowed members and having thereon a nut, which, when tightened up, is locked against vibratory rotation by expansion pressure of the bowed members.

2. A supporting device comprising a blank bent to form an end member with reenforcing flanges bent over from edges thereof, and webs extending transversely to said end member and to said flanges and terminating in clamping jaws.

3. A supporting device comprising a blank bent to. form a dished end member having flanges bent transversely thereto, and bowed webs bent transversely to said end member, said webs having flanges thereon and terminating in clamping aws; and a bolt connectingsaid webs.

A supporting device comprising a blank bent to form a hanger-engaging member having, flanges thereon and webs extending transversely to said member, said webs being provided with edge flanges and terminating in clamping jaws, in combination with a threaded nut disposed between said webs and said flanges first named.

In testimony whereof I have hereunto setmy name this 2nd day of April, 1924:.

VALTER SJ MAYER. 

